Gene Deletion in Barley Mediated by LTR-retrotransposon BARE

文献类型： 外文期刊

第一作者： Shang, Yi

作者： Shang, Yi;Zhu, Jinghuan;Wang, Junmei;Hua, Wei;Yang, Jianming;Yang, Fei;Li, Chengdao;Yang, Fei;Jia, Yong;Zhang, Xiao-Qi;Li, Chengdao;Schulman, Alan H.;Schulman, Alan H.;Schulman, Alan H.;Jia, Qiaojun

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： A poly-row branched spike (prbs) barley mutant was obtained from soaking a two-rowed barley inflorescence in a solution of maize genomic DNA. Positional cloning and sequencing demonstrated that the prbs mutant resulted from a 28 kb deletion including the inflorescence architecture gene HvRA2. Sequence annotation revealed that the HvRA2 gene is flanked by two LTR (long terminal repeat) retrotransposons (BARE) sharing 89% sequence identity. A recombination between the integrase (IN) gene regions of the two BARE copies resulted in the formation of an intact BARE and loss of HvRA2. No maize DNA was detected in the recombination region although the flanking sequences of HvRA2 gene showed over 73% of sequence identity with repetitive sequences on 10 maize chromosomes. It is still unknown whether the interaction of retrotransposons between barley and maize has resulted in the recombination observed in the present study.

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